I posted this in yesterdays wait a thon but I'm wondering what other people think of this idea. Ok so let's say I buy a 3G iPhone activate it change my plan from the current iPhone rate plan to the new more expensive $30 data plan with no txt messages then take my old iphone and reactivate it as if saying the new iPhone didnt work out for me I want to go back to the old iPhone. So now Im paying only $20 a month for data and txt messages but instead of using my old iPhone I switch my sim card from the old iPhone to the 3G iphone. Do you think that will work?